https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:geometric-optics/x0e2f5a2c:lenses/v/convex-lenses 2024-06-20T21:38:16.009746376Z Convex lenses Explore convex lenses, including how they refract and transmit light. Learn about a lens's focal point and the thin lens assumption. Sal Khan video https://cdn.kastatic.org/googleusercontent/di9TI9UEiz9ESAlKwE7o95Q-AjhEVpk5SX_YHs1Y2FBW3fW3W9HQI-9sUGErG65xwbedhrOCTgpEQ-jCXzwBs_s Convex lenses Explore convex lenses, including how they refract and transmit light. Learn about a lens's focal point and the thin lens assumption. https://cdn.kastatic.org/ka-youtube-converted/K0sjZ5nqQ7g.mp4/K0sjZ5nqQ7g.mp4 563 Image formation by spherical lenses https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:geometric-optics/x0e2f5a2c:lenses/v/convex-lens-examples 2024-06-20T21:38:16.009746376Z Convex lens examples Explore how convex lenses form images, including different scenarios where an object is placed at various distances from the lens. Learn how light rays refract through a convex lens, forming real, inverted, or virtual images. This video emphasizes understanding the process rather than memorizing outcomes. Sal Khan video https://cdn.kastatic.org/googleusercontent/j5goaXZ17KQU2qUJ7PnUY--RYXTFW77pop0HS52kPj8fbwW4ElRymEKh3q-ICyt1-NqNZwRRgvNgCh-1eAJgIql73w Convex lens examples Explore how convex lenses form images, including different scenarios where an object is placed at various distances from the lens. Learn how light rays refract through a convex lens, forming real, inverted, or virtual images. This video emphasizes understanding the process rather than memorizing outcomes. https://cdn.kastatic.org/ka-youtube-converted/xxF_mdoZom0.mp4/xxF_mdoZom0.mp4 576 Image formation by spherical lenses https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:geometric-optics/x0e2f5a2c:lenses/v/concave-lenses 2023-12-04T19:02:25.924542584Z Concave lenses Concave lenses, with their inward curve, create divergent light rays. When a ray parallel to the principal axis hits the lens, it refracts outward as if coming from the focal point. Another ray, passing through the lens center, doesn't refract. These rays form a virtual, upright, and smaller image, appearing closer to the lens than the actual object. Sal Khan video https://cdn.kastatic.org/googleusercontent/ci5QvP-jloz-pRWVU6YxKy3WUC29iOOfi8cvFqnbyEcM8qnM_Me-HpAEmWSh6LVPySucHb5HDXIzB8DSmRtcYpEs Concave lenses Concave lenses, with their inward curve, create divergent light rays. When a ray parallel to the principal axis hits the lens, it refracts outward as if coming from the focal point. Another ray, passing through the lens center, doesn't refract. These rays form a virtual, upright, and smaller image, appearing closer to the lens than the actual object. https://cdn.kastatic.org/ka-youtube-converted/Vh70PyitQzo.mp4/Vh70PyitQzo.mp4 186 Image formation by spherical lenses https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:geometric-optics/x0e2f5a2c:lenses/e/lenses-and-ray-diagrams 2026-04-07T23:36:17.218592739Z Image formation in spherical lenses Let's practice problems to figure out various optical distances in experiments with lenses, using just ray diagrams. Satrajit exercise https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:geometric-optics/x0e2f5a2c:lenses/e/paths-of-light-rays-through-spherical-lenses 2026-04-07T23:36:17.218592739Z Paths of light rays through spherical lenses Let's practice some problems to better understand the paths that light rays take after refracting through spherical lenses. Satrajit exercise